Results for "Linda A. Zotti"

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Heat dissipation in atomic-scale junctionsJul 31 2013Atomic and single-molecule junctions represent the ultimate limit to the miniaturization of electrical circuits. They are also ideal platforms to test quantum transport theories that are required to describe charge and energy transfer in novel functional ... More
Single-molecule conductance of a chemically modified, π-extended tetrathiafulvalene and its charge-transfer complex with F4TCNQJun 25 2015We describe the synthesis and single molecule electrical transport properties of a molecular wire containing a ${\pi}$-extended tetrathiafulvalene (exTTF) group and its charge-transfer complex with F4TCNQ. We form single molecule junctions using the in-situ ... More
Bayesian data fusion for unmeasured confoundingFeb 27 2019Bayesian causal inference offers a principled approach to policy evaluation of proposed interventions on mediators or time-varying exposures. We outline a general approach to the estimation of causal quantities for settings with time-varying confounding, ... More
The orbifold Chow ring of toric Deligne-Mumford stacksSep 14 2003Jun 11 2004Generalizing toric varieties, we introduce toric Deligne-Mumford stacks which correspond to combinatorial data. The main result in this paper is an explicit calculation of the orbifold Chow ring of a toric Deligne-Mumford stack. As an application, we ... More
Electron scattering in atomic force microscopy experimentsOct 13 2005It has been shown that electron transitions, as measured in a scanning tunnelling microscope (STM), are related to chemical interactions in a tunnelling barrier. Here, we show that the shape and apparent height of subatomic features in an atomic force ... More
A simple descriptor for energetics at fcc-bcc metal interfacesFeb 08 2018We develop a new and user-friendly method for calculating interface energies from first-principles. Our approach avoids problems that derive from the numerical differences between bulk and slab calculations, such as the number of k-points along the direction ... More
A highly obscured and strongly clustered galaxy population discovered with the Spitzer Space TelescopeNov 13 2006Nov 30 2006The ~800 optically unseen (R>25.5) 24mum-selected sources in the complete Spitzer First Look Survey sample (Fadda et al. 2006) with F[24mum]>0.35 mJy are found to be very strongly clustered. If, as indicated by several lines of circumstantial evidence, ... More
Quasar Luminosity Functions from Joint Evolution of Black Holes and Host GalaxiesMar 30 2006Jun 23 2006We show that our previously proposed anti-hierarchical baryon collapse scenario for the joint evolution of black holes and host galaxies predicts quasar luminosity functions at redshifts 1.5<z<6 and local properties in nice agreement with observations. ... More
A Physical Model for the joint evolution of QSOs and SpheroidsSep 16 2003We summarize our detailed, physically grounded, model for the early co-evolution of spheroidal galaxies and of active nuclei at their centers (astro-ph/0307202). Our predictions are excellent agreement with observations for a number of observables which ... More
A Molecular Platinum Cluster Junction: A Single-Molecule SwitchFeb 26 2013We present a theoretical study of the electronic transport through single-molecule junctions incorporating a Pt6 metal cluster bound within an organic framework. We show that the insertion of this molecule between a pair of electrodes leads to a fully ... More
Resonant transport and electrostatic effects in single-molecule electrical junctionsJun 03 2015In this contribution we demonstrate structural control over a transport resonance in HS(CH$_{2}$)$_{n}$[1,4 - C$_{6}$H$_{4}$](CH$_{2}$)$_{n}$SH (n = 1, 3, 4, 6) metal - molecule - metal junctions, fabricated and tested using the scanning tunnelling microscopy-based ... More
Enumerating Palindromes and Primitives in Rank Two Free GroupsFeb 19 2008Feb 12 2011Let $F= < a,b>$ be a rank two free group. A word $W(a,b)$ in $F$ is {\sl primitive} if it, along with another group element, generates the group. It is a {\sl palindrome} (with respect to $a$ and $b$) if it reads the same forwards and backwards. It is ... More
Dynamics of Generalized Nevanlinna FunctionsMay 28 2018In the early 1980's, computers made it possible to observe that in complex dynamics, one often sees dynamical behavior reflected in parameter space and vice versa. This duality was first exploited by Douady, Hubbard and their students in early work on ... More
Discreteness Criteria and the Hyperbolic Geometry of PalindromsAug 26 2008We consider non-elementary representations of two generator free groups in $PSL(2,\mathbb{C})$, not necessarily discrete or free, $G = < A, B >$. A word in $A$ and $B$, $W(A,B)$, is a palindrome if it reads the same forwards and backwards. A word in a ... More
Stable components in the parameter plane of meromorphic functions of finite typeFeb 21 2017Nov 25 2018We study the parameter planes of certain one-dimensional, dynamically-defined slices of holomorphic families of meromorphic transcendental maps of finite type for which infinity is not an asymptotic value. Our planes are defined by constraining the orbits ... More
From First Galaxies to QSOs: feeding the baby monstersSep 24 2004We present a physical model for the coevolution of massive spheroidal galaxies and active nuclei at their centers. Supernova heating is increasingly effective in slowing down the star formation and in driving gas outflows in smaller and smaller dark matter ... More
Carbon-fiber tips for scanning probe microscopes and molecular electronics experimentsMay 24 2012We fabricate and characterize carbon-fiber tips for their use in combined scanning tunneling and force microscopy based on piezoelectric quartz tuning fork force sensors. An electrochemical fabrication procedure to etch the tips is used to yield reproducible ... More
Carbon tips as electrodes for single-molecule junctionsSep 09 2011Nov 03 2011We study electron transport through single-molecule junctions formed by an octanethiol molecule bonded with the thiol anchoring group to a gold electrode and the opposing methyl endgroup to a carbon tip. Using the scanning tunneling microscope based break ... More
Enhanced High-Harmonic Generation from an All-Dielectric MetasurfaceOct 11 2017The recent observation of high-harmonic generation from solids creates a new possibility for engineering fundamental strong-field processes by patterning the solid target with subwavelength nanostructures. All-dielectric metasurfaces exhibit high damage ... More
The Role of Oligomeric Gold-Thiolate Units in Single Molecule Junc-tions of Thiol-Anchored MoleculesMar 20 2018Using the break junction (BJ) technique we show that Au(RS)2 units play a significant role in thiol-terminated molecular junctions formed on gold. We have studied a range of thiol-terminated compounds, either with the sulfur atoms in direct conjugation ... More
Magma oceans as a critical stage in the tectonic development of rocky planetsSep 05 2018Magma oceans are a common result of the high degree of heating that occurs during planet formation. It is thought that almost all of the large rocky bodies in the Solar System went through at least one magma ocean phase. In this paper, we review some ... More
The connected metric dimension at a vertex of a graphApr 22 2018Nov 08 2018The notion of metric dimension, $dim(G)$, of a graph $G$, as well as a number of variants, is now well studied. In this paper, we begin a local analysis of this notion by introducing $cdim_G(v)$, \emph{the connected metric dimension of $G$ at a vertex ... More
On Zero Forcing Number of Graphs and Their ComplementsFeb 09 2014Dec 27 2014The \emph{zero forcing number}, $Z(G)$, of a graph $G$ is the minimum cardinality of a set $S$ of black vertices (whereas vertices in $V(G) \setminus S$ are colored white) such that $V(G)$ is turned black after finitely many applications of "the color-change ... More
Metric Dimension and Zero Forcing Number of Two Families of Line GraphsJul 25 2012Apr 15 2013Zero forcing number has recently become an interesting graph parameter studied in its own right since its introduction by the "AIM Minimum Rank -- Special Graphs Work Group", whereas metric dimension is a well-known graph parameter. We investigate the ... More
Finding bases of uncountable free abelian groups is usually difficultSep 07 2017We investigate effective properties of uncountable free abelian groups. We show that identifying free abelian groups and constructing bases for such groups is often computationally hard, depending on the cardinality. For example, we show, under the assumption ... More
Cycle Doubling, Merging And Renormalization in the Tangent FamilyAug 05 2017Jul 26 2018In this paper we study the transition to chaos for the restriction to the real and imaginary axes of the tangent family $\{ T_t(z)=i t\tan z\}_{0< t\leq \pi}$. Because tangent maps have no critical points but have an essential singularity at infinity ... More
The Equivariant Chow rings of quot schemesFeb 08 2006Jan 05 2007We give a presentation for the (integral) torus-equivariant Chow ring of the quot scheme, a smooth compactification of the space of rational curves of degree d in the Grassmannian. For this presentation, we refine Evain's extension of the method of Goresky, ... More
K-classes of Brill-Noether loci and a determinantal formulaMay 08 2017Jun 25 2017We prove a determinantal formula for the K-theory class of certain degeneracy loci, and apply it to compute the Euler characteristic of the structure sheaf of the Brill-Noether locus of linear series with special vanishing at marked points. When the Brill-Noether ... More
Are Dusty Galaxies Blue? Insights on UV Attenuation from Dust-Selected GalaxiesOct 02 2014Galaxies' rest-frame ultraviolet (UV) properties are often used to directly infer the degree to which dust obscuration affects the measurement of star formation rates. While much recent work has focused on calibrating dust attenuation in galaxies selected ... More
Exploring Cosmic Origins with CORE: InflationDec 25 2016Apr 05 2017We forecast the scientific capabilities to improve our understanding of cosmic inflation of CORE, a proposed CMB space satellite submitted in response to the ESA fifth call for a medium-size mission opportunity. The CORE satellite will map the CMB anisotropies ... More
Exploring Cosmic Origins with CORE: Cosmological ParametersNov 30 2016Apr 05 2017We forecast the main cosmological parameter constraints achievable with the CORE space mission which is dedicated to mapping the polarisation of the Cosmic Microwave Background (CMB). CORE was recently submitted in response to ESA's fifth call for medium-sized ... More
Observational tests of the galaxy formation processJan 22 2004The mutual feedback between star formation and nuclear activity in large spheroidal galaxies may be a key ingredient to overcome several difficulties plaguing current semi-analytic models for galaxy formation. We discuss some observational implications ... More
Topic-adjusted visibility metric for scientific articlesFeb 25 2015Oct 16 2015Measuring the impact of scientific articles is important for evaluating the research output of individual scientists, academic institutions and journals. While citations are raw data for constructing impact measures, there exist biases and potential issues ... More
Extreme Magnetoresistance in Magnetic Rare Earth MonopnictidesApr 13 2017The acute sensitivity of the electrical resistance of certain systems to magnetic fields known as extreme magnetoresistance (XMR) has recently been explored in a new materials context with topological semimetals. Exemplified by WTe$_{2}$ and rare earth ... More
Effectiveness for the Dual Ramsey TheoremSep 29 2017We analyze the Dual Ramsey Theorem for $k$ partitions and $\ell$ colors ($\mathsf{DRT}^k_\ell$) in the context of reverse math, effective analysis, and strong reductions. Over $\mathsf{RCA}_0$, the Dual Ramsey Theorem stated for Baire colorings is equivalent ... More
3D Face Hallucination from a Single Depth FrameSep 13 2018We present an algorithm that takes a single frame of a person's face from a depth camera, e.g., Kinect, and produces a high-resolution 3D mesh of the input face. We leverage a dataset of 3D face meshes of 1204 distinct individuals ranging from age 3 to ... More
Oscillatory thermocapillary instability of a film heated by a thick substrateFeb 09 2019In this work we consider a new class of oscillatory instabilities that pertain to thermocapillary destabilization of a liquid film heated by a solid substrate. We assume the substrate thickness and substrate-film thermal conductivity ratio are large so ... More
Modelling spreading dynamics of liquid crystals in three spatial dimensionsMar 21 2013We study spreading dynamics of nematic liquid crystal droplets within the framework of the long-wave approximation. A fourth order nonlinear parabolic partial differential equation governing the free surface evolution is derived. The influence of elastic ... More
Supercooled Water and the Kinetic Glass Transition II: Collective DynamicsJun 05 1997In this article we study in detail the Q-vector dependence of the collective dynamics in simulated deeply supercooled SPC/E water. The evolution of the system has been followed for 250 ns at low T, allowing a clear identification of a two step relaxation ... More
Angular Momentum in Disk Wind Revealed in the Young Star MWC349AFeb 09 2017Feb 23 2017Disk winds are thought to play a critical role in star birth. As winds extract excess angular momentum from accretion disks, matter in the disk can be transported inward to the star to fuel mass growth. However, the observational evidence of wind carrying ... More
Futures pricing in electricity markets based on stable CARMA spot modelsJan 05 2012We present a new model for the electricity spot price dynamics, which is able to capture seasonality, low-frequency dynamics and the extreme spikes in the market. Instead of the usual purely deterministic trend we introduce a non-stationary independent ... More
Heat dissipation and its relation to thermopower in single-molecule junctionsJul 31 2013Motivated by recent experiments [Lee et al. Nature 498, 209 (2013)], we present here a detailed theoretical analysis of the Joule heating in current-carrying single-molecule junctions. By combining the Landauer approach for quantum transport with ab initio ... More
Sunyaev-Zel'dovich Effects from Quasars in Galaxies and GroupsSep 26 2003Oct 09 2003The energy fed by active galactic nuclei to the surrounding diffuse baryons changes their amount, temperature, and distribution; so in groups and in member galaxies it affects the X-ray luminosity and also the Sunyaev-Zel'dovich effect. Here we compute ... More
NaSt1: A Wolf-Rayet star cloaked by an eta Car--like nebula?Mar 26 1999We present a study of the peculiar Galactic emission line object NaSt1 (WR122, IRAS 18497+0056) which has previously been classified as a Wolf-Rayet (WR) star. Our spectroscopic dataset comprises Keck I-HIRES, WHT-ISIS and UKIRT-CGS4 observations which ... More
Herschel-ATLAS: The Surprising Diversity of Dust-Selected Galaxies in the Local Submillimetre UniverseFeb 12 2015Jun 09 2015We present the properties of the first 250 $\mu$m blind sample of nearby galaxies (15 < D < 46 Mpc) containing 42 objects from the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). Herschel's sensitivity probes the faint end of the dust luminosity ... More
Dust energy balance study of two edge-on spiral galaxies in the Herschel-ATLAS surveyMay 18 2015Interstellar dust in galaxies can be traced either through its extinction effects on the star light, or through its thermal emission at infrared wavelengths. Recent radiative transfer studies of several nearby edge-on galaxies have found an apparent inconsistency ... More
Multi-View Treelet TransformJun 02 2016Jun 17 2016Current multi-view factorization methods make assumptions that are not acceptable for many kinds of data, and in particular, for graphical data with hierarchical structure. At the same time, current hierarchical methods work only in the single-view setting. ... More
Smooth(er) Stellar Mass Maps in CANDELS: Constraints on the Longevity of Clumps in High-redshift Star-forming GalaxiesMar 12 2012May 10 2012We perform a detailed analysis of the resolved colors and stellar populations of a complete sample of 323 star-forming galaxies at 0.5 < z < 1.5, and 326 star-forming galaxies at 1.5 < z < 2.5 in the ERS and CANDELS-Deep region of GOODS-South. Galaxies ... More
Highly efficient frequency conversion with bandwidth compression of quantum lightOct 26 2016Hybrid quantum networks rely on efficient interfacing of dissimilar quantum nodes, since elements based on parametric down-conversion sources, quantum dots, color centres or atoms are fundamentally different in their frequencies and bandwidths. While ... More
A Graph Theoretical Analysis of the Number of Edges in k-dense GraphsMay 16 2015Due to the increasing discovery and implementation of networks within all disciplines of life, the study of subgraph connectivity has become increasingly important. Motivated by the idea of community (or sub-graph) detection within a network/graph, we ... More
Searching for low-workfunction phases in the Cs-Te system: the case of Cs2Te5Mar 09 2013We have computationally explored workfunction values of Cs2Te5, an existing crystalline phase of the Cs-Te system and a small bandgap semiconductor, in order to search for reduced workfunction alternatives of Cs2Te that preserve the exceptionally high ... More
A Description of a Subtask Dataset with GlancesFeb 07 2019This paper describes a set of data made available that contains detailed subtask coding of interactions with several production vehicle human machine interfaces (HMIs) on open roadways, along with accompanying eyeglance data.
Constraining Primordial Non-Gaussianity with High-Redshift ProbesJul 12 2010Aug 03 2010We present an analysis of the constraints on the amplitude of primordial non-Gaussianity of local type described by the dimensionless parameter $f_{\rm NL}$. These constraints are set by the auto-correlation functions (ACFs) of two large scale structure ... More
The Planck-ATCA Coeval Observations (PACO) project: the faint sampleJun 03 2011Jun 23 2011The Planck-ATCA Co-eval Observations (PACO) project collected data between 4.5 and 40 GHz for 482 sources selected within the Australia Telescope 20 GHz (AT20G) catalogue and observed with the Australia Telescope Compact Array (ATCA). Observations were ... More
Inverse folding of RNA pseudoknot structuresMay 06 2009Mar 11 2010Background: RNA exhibits a variety of structural configurations. Here we consider a structure to be tantamount to the noncrossing Watson-Crick and \pairGU-base pairings (secondary structure) and additional cross-serial base pairs. These interactions are ... More
Matter Power Spectrum Covariance Matrix from the DEUS-PUR ΛCDM simulations: Mass Resolution and non-Gaussian ErrorsJun 10 2014Oct 27 2014The upcoming generation of galaxy surveys will probe the distribution of matter in the universe with unprecedented accuracy. Measurements of the matter power spectrum at different scales and redshifts will provide stringent constraints on the cosmological ... More
Experimental Detection of Quantum ChannelsJul 23 2013We demonstrate experimentally the possibility of efficiently detecting properties of quantum channels and quantum gates. The optimal detection scheme is first achieved for non entanglement breaking channels of the depolarizing form and is based on the ... More
Observational tests of the evolution of spheroidal galaxiesDec 14 2004Granato et al (2004) have elaborated a physically grounded model exploiting the mutual feedback between star-forming spheroidal galaxies and the active nuclei growing in their cores to overcome, in the framework of the hierarchical clustering scenario ... More
Confusion noise at far-IR to millimeter wavelengthsJan 12 2004Apr 26 2004We present detailed predictions for the confusion noise due to extragalactic sources in the far-IR/(sub)-millimeter channels of ESA/ISO, NASA/Spitzer, ESA/Herschel and ESA/Planck satellites, including the contribution from clustering of unresolved SCUBA ... More
Note on the hydrodynamic description of thin nematic films: strong anchoring modelJan 17 2013Jul 22 2013We discuss the long-wave hydrodynamic model for a thin film of nematic liquid crystal in the limit of strong anchoring at the free surface and at the substrate. We rigorously clarify how the elastic energy enters the evolution equation for the film thickness ... More
Interpretation of monoclinic hafnia valence electron energy loss spectra by TDDFTJan 29 2016We present the valence electron energy-loss spectrum and the dielectric function of monoclinic hafnia (m-HfO$_2$) obtained from time-dependent density-functional theory (TDDFT) predictions and compared to energy-filtered spectroscopic imaging measurements ... More
A search for debris disks in the Herschel ATLASMay 17 2010Aims: We aim to demonstrate that the Herschel ATLAS (H-ATLAS) is suitable for a blind and unbiased survey for debris disks by identifying candidate debris disks associated with main sequence stars in the initial science demonstration field of the survey. ... More
Theoretical study of the charge transport through C60-based single-molecule junctionsMar 14 2012We present a theoretical study of the conductance and thermopower of single-molecule junctions based on C60 and C60-terminated molecules. We first analyze the transport properties of gold-C60-gold junctions and show that these junctions can be highly ... More
Geometrical and Physical Properties of Circumbinary Discs in Eccentric Stellar BinariesSep 06 2008In a previous work (Pichardo et al. 2005), we studied stable configurations for circumstellar discs in eccentric binary systems. We searched for "invariant loops": closed curves (analogous to stable periodic orbits in time-independent potentials) that ... More
Circumstellar and Circumbinary Disks in Eccentric Stellar BinariesJan 13 2005We explore test particle orbits in the orbital plane of eccentric stellar binary systems, searching for ``invariant loops'': closed curves that change shape periodically as a function of binary orbital phase as the test particles in them move under the ... More
Theoretical Study of Cubic Structures Based on Fullerene Carbon Clusters: C$_{28}$C and (C$_{28})_{2}$Feb 13 1995We study a new hypothetical form of solid carbon \csc, with a unit cell which is composed of the \cs \ fullerene cluster and an additional single carbon atom arranged in the zincblende structure. Using {\it ab initio} calculations, we show that this new ... More
Realistic Ionizing Fluxes for Young Stellar Populations from 0.05 to twice solar metallicityJul 25 2002Nov 04 2002We present a new grid of ionizing fluxes for O and Wolf-Rayet stars for use with evolutionary synthesis codes and single star H II region analyses. A total of 230 expanding, non-LTE, line-blanketed model atmospheres have been calculated for five metallicities ... More
Difference equations and pseudo-differential operators on $\mathbb{Z}^n$May 22 2017In this paper we develop the calculus of pseudo-differential operators on the lattice $\mathbb{Z}^n$, which we can call pseudo-difference operators. An interesting feature of this calculus is that the phase space is compact so the symbol classes are defined ... More
Observability of Early Evolutionary Phases of Galaxies at mm WavelengthsFeb 29 1996Several lines of evidence and theoretical arguments suggest that a large fraction of starlight is absorbed by interstellar dust and re-radiated at far-IR wavelengths, particularly during early evolutionary phases of early type galaxies, which may even, ... More
The dramatic size evolution of elliptical galaxies and the quasar feedbackSep 26 2008Oct 21 2008Observations have evidenced that passively evolving massive galaxies at high redshift are much more compact than local galaxies with the same stellar mass. We argue that the observed strong evolution in size is directly related to the quasar feedback, ... More
The 3rd Fermi GBM Gamma-Ray Burst Catalog: The First Six YearsMar 24 2016Since its launch in 2008, the Fermi Gamma-ray Burst Monitor (GBM) has triggered and located on average approximately two gamma-ray bursts (GRB) every three days. Here we present the third of a series of catalogs of GRBs detected by GBM, extending the ... More
Astrophysical and Cosmological Information from Large-scale sub-mm Surveys of Extragalactic SourcesMar 09 2007We present a quantitative analysis of the astrophysical and cosmological information that can be extracted from the many important wide-area, shallow surveys that will be carried out in the next few years. Our calculations combine the predictions of the ... More
Surveys of extragalactic sources with PlanckNov 08 2004Although the primary goal of ESA's Planck mission is to produce high resolution maps of the temperature and polarization anisotropies of the Cosmic Microwave Background (CMB), its high-sensitivity all-sky surveys of extragalactic sources at 9 frequencies ... More
Iterative Machine TeachingMay 30 2017Nov 17 2017In this paper, we consider the problem of machine teaching, the inverse problem of machine learning. Different from traditional machine teaching which views the learners as batch algorithms, we study a new paradigm where the learner uses an iterative ... More
Extragalactic source contributions to arcminute-scale Cosmic Microwave Background anisotropiesOct 25 2004Apr 21 2005The possible contributions of the various classes of extragalactic sources (including, in addition to the canonical radio sources, GHz Peaked Spectrum sources, advection-dominated sources, starburst galaxies, high-redshift proto-spheroidal galaxies) to ... More
Millimeter-band Surveys of Extragalactic SourcesApr 02 2002Surveys at mm wavelengths emphasize rare classes of extragalactic radio sources characterized by spectra keeping flat or inverted up to high frequencies (such as blazars, GPS sources, advection dominated sources, or even gamma-ray burst afterglows), which ... More
Recent Results on the Higgs Boson Properties in the $H\to ZZ \to 4\ell$ decay channel at CMSSep 09 2014Oct 17 2014The latest results on the measurement of the properties of the new boson with mass around 125 GeV are reported. The analysis uses pp collision data recorded by the CMS detector at the LHC, corresponding to integrated luminosities of 5.1 $fb^{-1}$ at $\sqrt{s}$ ... More
The SW Sex phenomenon as an evolutionary stage of Cataclysmic VariablesNov 09 2012From recent large observing campaigns, one finds that nearly all non- or weakly magnetic cataclysmic variables in the orbital period range between 2.8 and 4 hours are of SW Sex type and as such experience very high mass transfer rates. The evolution of ... More
Quantum cohomology of flag manifoldsOct 09 2000The (small) quantum cohomology ring of a flag manifold F encodes enumerative geometry of rational curves on F. We give a proof of the presentation of the ring and of a quantum Giambelli formula, which is more direct and geometric than the previously known ... More
Nonlinear Analysis of the Solutions of the Hasegawa-Wakatani EquationsJul 01 2011The Hasegawa-Wakatani models are used in the study of confinement of hot plasmas with externally imposed magnetic fields. The nonlinear terms in the Hasegawa-Wakatani models complicate the analysis of the system as they propagate local changes across ... More
Chaotic quasi-collision trajectories in the 3-centre problemNov 18 2009May 04 2010We study a particular kind of chaotic dynamics for the planar 3-centre problem on small negative energy level sets. We know that chaotic motions exist, if we make the assumption that one of the centres is far away from the other two (see Bolotin and Negrini, ... More
Explicit Small Heights in Infinite Non-Abelian ExtensionsDec 12 2017Jan 05 2018Let $E$ be an elliptic curve over the rationals. We will consider the infinite extension $\mathbb{Q}(E_{\text{tor}})$ of the rationals where we adjoin all coordinates of torsion points of $E$. In this paper we will prove an explicit lower bound for the ... More
Poincare polynomials of hyperquot schemesMar 14 2000Hyperquot schemes are generalizations of Grothendieck's Quot scheme to partial flags. Using a Bialynicki-Birula decomposition, we obtain combinatorial data for the Betti numbers, and collect this information into the form of rational generating functions ... More
Inference of a Dyadic Measure and its Simplicial Geometry from Binary Feature Data and Application to Data QualityApr 29 2017We propose a new method for representing data sets with a set of binary feature functions. We compute both the dyadic set structure determined by an order on the binary features together with the canonical product coefficient parameters for the associated ... More
A reassessment of the evidence of the Integrated Sachs-Wolfe effect through the WMAP-NVSS correlationFeb 01 2008We reassess the estimate of the cross-correlation of the spatial distribution of the NRAO VLA Sky Survey (NVSS) radio sources with that of Cosmic Microwave Background (CMB) anisotropies from the Wilkinson Microwave Anisotropy Probe (WMAP). This re-analysis ... More
The Stellar and Gas Kinematics of Several Irregular GalaxiesJul 23 2002We present long-slit spectra of three irregular galaxies from which we determinethe stellar kinematics in two of the galaxies (NGC 1156 and NGC 4449) and ionized-gas kinematics in all three (including NGC 2366). We compare this to the optical morphology ... More
Cosmic Evolution of Size and Velocity Dispersion for Early Type GalaxiesJun 11 2010[abridged] Massive, passively evolving galaxies at redshifts z>1 exhibit on the average physical sizes smaller by factors ~3 than local early type galaxies (ETGs) endowed with the same stellar mass. Small sizes are in fact expected on theoretical grounds, ... More
The stellar velocity dispersion in the inner 1.3 disk scale-lengths of the irregular galaxy NGC 4449Aug 13 2005We present measurements of the stellar velocity dispersion in the inner 1 arcmin radius (1.3 disk scale-lengths) of the irregular galaxy NGC 4449 determined from long-slit absorption-line spectra. The average observed dispersion is 29 +/-2 km/s, the same ... More
Origins Space Telescope: predictions for far-IR spectroscopic surveysMar 03 2019We illustrate the extraordinary potential of the (far-IR) Origins Survey Spectrometer (OSS) on board the Origins Space Telescope (OST) to address a variety of open issues on the co-evolution of galaxies and AGNs. We present predictions for blind surveys, ... More
Ultrafast manipulation of mirror domain walls in a charge density waveOct 25 2018Domain walls (DWs) are singularities in an ordered medium that often host exotic phenomena such as charge ordering, insulator-metal transition, or superconductivity. The ability to locally write and erase DWs is highly desirable, as it allows one to design ... More
Robust imaging of hippocampal inner structure at 7T: in vivo acquisition protocol and methodological choicesMay 09 2016OBJECTIVE:Motion-robust multi-slab imaging of hippocampal inner structure in vivo at 7T.MATERIALS AND METHODS:Motion is a crucial issue for ultra-high resolution imaging, such as can be achieved with 7T MRI. An acquisition protocol was designed for imaging ... More
Creating Weyl nodes and controlling their energy by magnetization rotationMar 07 2019Mar 11 2019As they do not rely on the presence of any crystal symmetry, Weyl nodes are robust topological features of an electronic structure that can occur at any momentum and energy. Acting as sinks and sources of Berry curvature, Weyl nodes have been predicted ... More
High Frequency Peakers: Baby Radio Sources?Sep 12 2003We present the results of second epoch simultaneous multifrequency observations of 45 sources out of the 55 in the sample of High Frequency Peakers (HFP) by Dallacasa et al. (2000). Seven of the stellar sources (i.e. 16% of the total number of sources ... More
The Extragalactic IR BackgroundOct 11 1994Current limits on the intensity of the extragalactic infrared background are consistent with the expected contribution from evolving galaxies. Depending on the behaviour of the star formation rate and of the initial mass function, we can expect that dust ... More
Angular Correlations of the X-Ray Background and Clustering of Extragalactic X-Ray SourcesFeb 24 1993The information content of the autocorrelation function (ACF) of intensity fluctuations of the X-ray background (XRB) is analyzed. The tight upper limits set by ROSAT deep survey data on the ACF at arcmin scales imply strong constraints on clustering ... More
Radio Observations of Star Forming Galaxies in the SKA eraDec 18 2014We have combined determinations of the epoch-dependent star formation rate (SFR) function with relationships between SFR and radio (synchrotron and free-free) emission to work out detailed predictions for the counts and the redshift distributions of star-forming ... More
CALYPSO view of SVS 13A with PdBI: Multiple jet sourcesJul 07 2017Aims. We wish to clarify the origin of the multiple jet features emanating from the binary protostar SVS 13A (= VLA4A/VLA4B). Methods. We used the Plateau de Bure Interferometer to map at 0.3-0.8" (~70-190 au) dust emission at 1.4 mm, CO(2-1), SiO(5-4), ... More
Adjusting for Misclassification: A Three-Phase Sampling ApproachJun 15 2013Oct 15 2016The United States Department of Agriculture's National Agricultural Statistics Service (NASS) conducts the June Agricultural Survey (JAS) annually. Substantial misclassification occurs during the pre-screening process and from field-estimating farm status ... More
The Measurement of Disk Ellipticity in Nearby Spiral GalaxiesMar 13 2001We have measured the intrinsic disk ellipticity for 7 nearby, nearly face-on spiral galaxies by combining Densepak integral-field spectroscopy with I-band imaging from the WIYN telescope. Initially assuming an axisymmetric model, we determine kinematic ... More
Another look to distortions of the CMB spectrumDec 15 2015Feb 09 2016We review aspects of Cosmic Microwave Background (CMB) spectral distortions which do not appear to have been fully explored in the literature. In particular, implications of recent evidences of heating of the intergalactic medium (IGM) by feedback from ... More